1 Cell battery LED flasher circuits
Posted on Feb 13, 2013
Related Circuits
New Circuits
-
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
.
The completed board may be driven by voltages between .8 and 3 Volts. While the basic design goal...
Here is a diagram of the internals of the MAX232A. It shows a double charge pump voltage doubler...
The switcher output goes to the single vertical input of the scope, and a sync line from one of...
The circuit, built around a single integrated circuit (Ul, an MC3403P quad op amp), three...
File alarm with LDR sensor. The sensitivity of the circuit is dependent upon the distance between...
As the name suggests All Q, C and ZD the Bias and buffer phases. Its main goal is to provide a...
The GDO originally used a triode vacuum tube configured as an oscillator, with a sensitive DC...
I need to make a square-wave with variable frequency, but 50% duty cycle. The 555 timer seemed...
There are plans to make it 1Gsps in the future, using interleaved ADCs and staggered clock, but...
It is sometimes necessary to monitor a device that generates a relatively short pulse to indicate...
The circuit is the use of FET amplifier circuit for output. NE5532 op amp using 15V power supply,...
characters left: